To the **main 304 course site** for Spring 2023. Most of the information you need is there. Here is specific information for my section, 08.

Office: WH-216

Email: zaslav@math.binghamton.edu

SIGN UP FOR Math 304: Linear Algebra.
Do not sign up for Linear Algebra.
To sign up for the book:

1. Sign in or create an account at learn.zybooks.com

2. Enter zyBook code: BINGHAMTONMATH304Spring2023

3. Subscribe

When you sign up, you get online access until June. For doing exercises, you need online access. That is what zyBooks means by "rent".

You get points for doing exercises. The more exercises (and the more correct), the more points. The points are automatic.

You can download each chapter to have a non-interactive copy in your computer forever. You can't use it for exercise credit, but you can keep it as your linear algebra reference in future courses.

I encourage you to form study groups. Discussion with other students is a big part of learning math.

I expect everyone to read the assigned sections carefully before the lecture.

Previous quizzes:

- Quiz 1 and solutions.
- Class Problem 1.
- Quiz 2 and solutions.
- Quiz 3 and solutions.
- Quiz 4 and solutions.
- Quiz 5 and solutions.
- Quiz 6 and solutions.
- Quiz 7 and solutions.
- Quiz 8 and solutions.
- Class Problem 2.
- Class Problem 3.
- Quiz 9 and solutions.

- University PHOTO ID is required to take all exams.
**No electronics**are allowed during exams or quizzes.

**Section 2.1.**We don't make much use of angles for directions in**R**^{2}, but you know that adding or subtracting 360° doesn't change the direction, so (for example) the direction −60° = the direction 300°.- The
**magnitude**of a vector is also called**length**. - There are two kinds of
**parametric forms**of the equation of a line in**R**^{n}. There is the**vector parametric form**which uses one vector equation,**r**=**r**_{0}+ t**v**(where**v**is a vector in the direction of the line), and the**coordinate parametric form**which uses n scalar equations, x_{1}= x_{01}+ t v_{01}, x_{2}= x_{02}+ t v_{02}, etc. The parameter is t = any real number. (The book only calls the second form "parametric", but they are both parametric.) **Sections 6.6-7: Coordinatization and linear transformations.**There are some mistakes and some things that are confusing. Read my supplement for better explanations and corrections. (You are responsible for the content of the supplement.)

Always turn your cell phone to silent before entering the classroom. No cell phone use is allowed except for classwork, such as consulting the textbook. If you do use your phone otherwise, I may confiscate your device for the rest of the class.

To the main 304 course site.